LCOV - code coverage report
Current view: top level - library/spdm_requester_lib - libspdm_req_encap_request.c (source / functions) Coverage Total Hit
Test: coverage.info Lines: 66.5 % 221 147
Test Date: 2025-08-24 08:11:14 Functions: 80.0 % 5 4

            Line data    Source code
       1              : /**
       2              :  *  Copyright Notice:
       3              :  *  Copyright 2021-2025 DMTF. All rights reserved.
       4              :  *  License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
       5              :  **/
       6              : 
       7              : #include "internal/libspdm_requester_lib.h"
       8              : 
       9              : #if LIBSPDM_ENABLE_CAPABILITY_ENCAP_CAP
      10              : 
      11           13 : void libspdm_register_get_encap_response_func(void *spdm_context,
      12              :                                               const libspdm_get_encap_response_func
      13              :                                               get_encap_response_func)
      14              : {
      15              :     libspdm_context_t *context;
      16              : 
      17           13 :     context = spdm_context;
      18           13 :     context->get_encap_response_func = (void *)get_encap_response_func;
      19           13 : }
      20              : 
      21              : /**
      22              :  * Return the GET_ENCAP_RESPONSE function via request code.
      23              :  *
      24              :  * @param  request_code                  The SPDM request code.
      25              :  *
      26              :  * @return GET_ENCAP_RESPONSE function according to the request code.
      27              :  **/
      28              : static libspdm_get_encap_response_func
      29            8 : libspdm_get_encap_response_func_via_request_code(uint8_t request_response_code)
      30              : {
      31              :     typedef struct {
      32              :         uint8_t request_response_code;
      33              :         libspdm_get_encap_response_func get_encap_response_func;
      34              :     } libspdm_get_encap_response_struct_t;
      35              : 
      36              :     size_t index;
      37              : 
      38            8 :     libspdm_get_encap_response_struct_t get_encap_response_struct[] = {
      39              :         #if LIBSPDM_ENABLE_CAPABILITY_MUT_AUTH_CAP
      40              :         #if LIBSPDM_ENABLE_CAPABILITY_CERT_CAP
      41              :         { SPDM_GET_DIGESTS, libspdm_get_encap_response_digest },
      42              :         { SPDM_GET_CERTIFICATE, libspdm_get_encap_response_certificate },
      43              :         #endif /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
      44              : 
      45              :         #if LIBSPDM_ENABLE_CAPABILITY_CHAL_CAP
      46              :         { SPDM_CHALLENGE, libspdm_get_encap_response_challenge_auth },
      47              :         #endif /* LIBSPDM_ENABLE_CAPABILITY_CHAL_CAP */
      48              :         #endif /* LIBSPDM_ENABLE_CAPABILITY_MUT_AUTH_CAP */
      49              : 
      50              :         { SPDM_KEY_UPDATE, libspdm_get_encap_response_key_update },
      51              : 
      52              :         #if LIBSPDM_EVENT_RECIPIENT_SUPPORT
      53              :         { SPDM_SEND_EVENT, libspdm_get_encap_response_event_ack },
      54              :         #endif /* LIBSPDM_EVENT_RECIPIENT_SUPPORT */
      55              : 
      56              :         #if LIBSPDM_ENABLE_CAPABILITY_ENDPOINT_INFO_CAP
      57              :         { SPDM_GET_ENDPOINT_INFO, libspdm_get_encap_response_endpoint_info },
      58              :         #endif /* LIBSPDM_ENABLE_CAPABILITY_ENDPOINT_INFO_CAP */
      59              :     };
      60              : 
      61           23 :     for (index = 0; index < LIBSPDM_ARRAY_SIZE(get_encap_response_struct); index++) {
      62           22 :         if (request_response_code == get_encap_response_struct[index].request_response_code) {
      63            7 :             return get_encap_response_struct[index].get_encap_response_func;
      64              :         }
      65              :     }
      66            1 :     return NULL;
      67              : }
      68              : 
      69              : /**
      70              :  * This function processes encapsulated request.
      71              :  *
      72              :  * @param  spdm_context         A pointer to the SPDM context.
      73              :  * @param  encap_request_size   Size, in bytes, of the request data buffer.
      74              :  * @param  encap_request        A pointer to a destination buffer to store the request.
      75              :  * @param  encap_response_size  Size, in bytes, of the response data buffer.
      76              :  * @param  encap_response       A pointer to a destination buffer to store the response.
      77              :  **/
      78            8 : static libspdm_return_t libspdm_process_encapsulated_request(libspdm_context_t *spdm_context,
      79              :                                                              size_t encap_request_size,
      80              :                                                              void *encap_request,
      81              :                                                              size_t *encap_response_size,
      82              :                                                              void *encap_response)
      83              : {
      84              :     libspdm_get_encap_response_func get_encap_response_func;
      85              :     spdm_message_header_t *spdm_requester;
      86              : 
      87            8 :     spdm_requester = encap_request;
      88            8 :     if (encap_request_size < sizeof(spdm_message_header_t)) {
      89            0 :         return libspdm_generate_encap_error_response(
      90              :             spdm_context, SPDM_ERROR_CODE_UNSUPPORTED_REQUEST,
      91            0 :             spdm_requester->request_response_code,
      92              :             encap_response_size, encap_response);
      93              :     }
      94              : 
      95            8 :     get_encap_response_func = libspdm_get_encap_response_func_via_request_code(
      96            8 :         spdm_requester->request_response_code);
      97            8 :     if (get_encap_response_func == NULL) {
      98            1 :         get_encap_response_func =
      99            1 :             (libspdm_get_encap_response_func)spdm_context->get_encap_response_func;
     100              :     }
     101            8 :     if (get_encap_response_func != NULL) {
     102            7 :         return get_encap_response_func(
     103              :             spdm_context, encap_request_size, encap_request,
     104              :             encap_response_size, encap_response);
     105              :     } else {
     106            1 :         return libspdm_generate_encap_error_response(
     107              :             spdm_context, SPDM_ERROR_CODE_UNEXPECTED_REQUEST,
     108              :             0, encap_response_size, encap_response);
     109              :     }
     110              : }
     111              : 
     112           13 : libspdm_return_t libspdm_encapsulated_request(libspdm_context_t *spdm_context,
     113              :                                               const uint32_t *session_id,
     114              :                                               uint8_t mut_auth_requested,
     115              :                                               uint8_t *req_slot_id_param)
     116              : {
     117              :     libspdm_return_t status;
     118              :     uint8_t *spdm_request;
     119              :     size_t spdm_request_size;
     120              :     spdm_get_encapsulated_request_request_t
     121              :     *spdm_get_encapsulated_request_request;
     122              :     spdm_deliver_encapsulated_response_request_t
     123              :     *spdm_deliver_encapsulated_response_request;
     124              :     uint8_t *spdm_response;
     125              :     size_t spdm_response_size;
     126              :     spdm_encapsulated_request_response_t *libspdm_encapsulated_request_response;
     127              :     spdm_encapsulated_response_ack_response_t
     128              :     *spdm_encapsulated_response_ack_response;
     129              :     libspdm_session_info_t *session_info;
     130              :     uint8_t request_id;
     131              :     void *encapsulated_request;
     132              :     size_t encapsulated_request_size;
     133              :     void *encapsulated_response;
     134              :     size_t encapsulated_response_size;
     135              :     size_t ack_header_size;
     136              : 
     137              :     uint8_t *message;
     138              :     size_t message_size;
     139              :     size_t transport_header_size;
     140              : 
     141              :     #if LIBSPDM_ENABLE_CAPABILITY_CERT_CAP
     142              :     spdm_get_digest_request_t *get_digests;
     143              :     #endif /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
     144              : 
     145           13 :     if (!libspdm_is_encap_supported(spdm_context)) {
     146            0 :         return LIBSPDM_STATUS_UNSUPPORTED_CAP;
     147              :     }
     148              : 
     149           13 :     if (session_id != NULL) {
     150            0 :         session_info = libspdm_get_session_info_via_session_id(spdm_context, *session_id);
     151            0 :         if (session_info == NULL) {
     152            0 :             LIBSPDM_ASSERT(false);
     153            0 :             return LIBSPDM_STATUS_INVALID_STATE_LOCAL;
     154              :         }
     155            0 :         LIBSPDM_ASSERT((mut_auth_requested == 0) ||
     156              :                        (mut_auth_requested ==
     157              :                         SPDM_KEY_EXCHANGE_RESPONSE_MUT_AUTH_REQUESTED_WITH_ENCAP_REQUEST) ||
     158              :                        (mut_auth_requested ==
     159              :                         SPDM_KEY_EXCHANGE_RESPONSE_MUT_AUTH_REQUESTED_WITH_GET_DIGESTS));
     160              :     } else {
     161           13 :         LIBSPDM_ASSERT(mut_auth_requested == 0);
     162              :     }
     163              : 
     164              : 
     165              :     /* Cache */
     166           13 :     libspdm_reset_message_mut_b(spdm_context);
     167           13 :     libspdm_reset_message_mut_c(spdm_context);
     168              : 
     169           13 :     if (session_id == NULL) {
     170           13 :         spdm_context->last_spdm_request_session_id_valid = false;
     171           13 :         spdm_context->last_spdm_request_session_id = 0;
     172              :     } else {
     173            0 :         spdm_context->last_spdm_request_session_id_valid = true;
     174            0 :         spdm_context->last_spdm_request_session_id = *session_id;
     175              :     }
     176              : 
     177           13 :     if (mut_auth_requested == SPDM_KEY_EXCHANGE_RESPONSE_MUT_AUTH_REQUESTED_WITH_GET_DIGESTS) {
     178              : #if LIBSPDM_ENABLE_CAPABILITY_CERT_CAP
     179            0 :         get_digests = (void *)spdm_context->last_spdm_request;
     180            0 :         get_digests->header.spdm_version = libspdm_get_connection_version (spdm_context);
     181            0 :         get_digests->header.request_response_code = SPDM_GET_DIGESTS;
     182            0 :         get_digests->header.param1 = 0;
     183            0 :         get_digests->header.param2 = 0;
     184            0 :         spdm_context->last_spdm_request_size = sizeof(spdm_get_digest_request_t);
     185            0 :         encapsulated_request = (void *)spdm_context->last_spdm_request;
     186            0 :         encapsulated_request_size = spdm_context->last_spdm_request_size;
     187            0 :         request_id = 0;
     188              : #else /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
     189              :         return LIBSPDM_STATUS_UNSUPPORTED_CAP;
     190              : #endif /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
     191              :     } else {
     192           13 :         transport_header_size = spdm_context->local_context.capability.transport_header_size;
     193           13 :         status = libspdm_acquire_sender_buffer (spdm_context, &message_size, (void **)&message);
     194           13 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     195            0 :             return status;
     196              :         }
     197           13 :         LIBSPDM_ASSERT (message_size >= transport_header_size +
     198              :                         spdm_context->local_context.capability.transport_tail_size);
     199           13 :         spdm_request = (void *)(message + transport_header_size);
     200           13 :         spdm_request_size = message_size - transport_header_size -
     201           13 :                             spdm_context->local_context.capability.transport_tail_size;
     202              : 
     203           13 :         spdm_context->crypto_request = true;
     204           13 :         spdm_get_encapsulated_request_request = (void *)spdm_request;
     205           13 :         spdm_get_encapsulated_request_request->header.spdm_version =
     206           13 :             libspdm_get_connection_version (spdm_context);
     207              :         spdm_get_encapsulated_request_request->header
     208           13 :         .request_response_code = SPDM_GET_ENCAPSULATED_REQUEST;
     209           13 :         spdm_get_encapsulated_request_request->header.param1 = 0;
     210           13 :         spdm_get_encapsulated_request_request->header.param2 = 0;
     211           13 :         spdm_request_size = sizeof(spdm_get_encapsulated_request_request_t);
     212           13 :         libspdm_reset_message_buffer_via_request_code
     213              :             (spdm_context, NULL,
     214           13 :             spdm_get_encapsulated_request_request->header.request_response_code);
     215           13 :         status = libspdm_send_spdm_request(spdm_context, session_id, spdm_request_size,
     216              :                                            spdm_request);
     217           13 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     218            1 :             libspdm_release_sender_buffer (spdm_context);
     219            1 :             return status;
     220              :         }
     221           12 :         libspdm_release_sender_buffer (spdm_context);
     222           12 :         spdm_get_encapsulated_request_request = (void *)spdm_context->last_spdm_request;
     223              : 
     224              :         /* receive */
     225              : 
     226           12 :         status = libspdm_acquire_receiver_buffer (spdm_context, &message_size, (void **)&message);
     227           12 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     228            0 :             return status;
     229              :         }
     230           12 :         LIBSPDM_ASSERT (message_size >= transport_header_size);
     231           12 :         spdm_response = (void *)(message);
     232           12 :         spdm_response_size = message_size;
     233              : 
     234           12 :         status = libspdm_receive_spdm_response(
     235              :             spdm_context, session_id, &spdm_response_size,
     236              :             (void **)&spdm_response);
     237           12 :         libspdm_encapsulated_request_response = (void *)spdm_response;
     238           12 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     239            0 :             libspdm_release_receiver_buffer (spdm_context);
     240            0 :             return status;
     241              :         }
     242           12 :         if (libspdm_encapsulated_request_response->header.request_response_code == SPDM_ERROR) {
     243            3 :             const uint8_t error_code = libspdm_encapsulated_request_response->header.param1;
     244              : 
     245            3 :             libspdm_release_receiver_buffer(spdm_context);
     246              : 
     247            3 :             if (spdm_response_size < sizeof(spdm_error_response_t)) {
     248            0 :                 libspdm_release_receiver_buffer (spdm_context);
     249            0 :                 return LIBSPDM_STATUS_INVALID_MSG_SIZE;
     250              :             }
     251              : 
     252            3 :             if (mut_auth_requested == 0) {
     253              :                 /* Responder can send NoPendingRequests or UnexpectedRequest if it has no
     254              :                  * encapsulated request for the Requester. */
     255            3 :                 if ((libspdm_get_connection_version(spdm_context) >= SPDM_MESSAGE_VERSION_13) &&
     256              :                     (error_code == SPDM_ERROR_CODE_NO_PENDING_REQUESTS)) {
     257              : 
     258            1 :                     return LIBSPDM_STATUS_SUCCESS;
     259              :                 }
     260            2 :                 if ((libspdm_get_connection_version(spdm_context) < SPDM_MESSAGE_VERSION_13) &&
     261              :                     (error_code == SPDM_ERROR_CODE_UNEXPECTED_REQUEST)) {
     262            1 :                     return LIBSPDM_STATUS_SUCCESS;
     263              :                 }
     264              :             }
     265            1 :             status = libspdm_handle_error_response_main(
     266              :                 spdm_context, session_id,
     267              :                 &spdm_response_size, (void **)&spdm_response,
     268              :                 SPDM_GET_ENCAPSULATED_REQUEST, SPDM_ENCAPSULATED_REQUEST);
     269            1 :             return status;
     270              :         }
     271            9 :         if (libspdm_encapsulated_request_response->header.spdm_version !=
     272            9 :             spdm_get_encapsulated_request_request->header.spdm_version) {
     273            0 :             libspdm_release_receiver_buffer (spdm_context);
     274            0 :             return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     275              :         }
     276              : 
     277            9 :         if (libspdm_encapsulated_request_response->header.request_response_code !=
     278              :             SPDM_ENCAPSULATED_REQUEST) {
     279            0 :             libspdm_release_receiver_buffer (spdm_context);
     280            0 :             return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     281              :         }
     282            9 :         if (spdm_response_size <= sizeof(spdm_encapsulated_request_response_t)) {
     283            1 :             libspdm_release_receiver_buffer (spdm_context);
     284            1 :             return LIBSPDM_STATUS_INVALID_MSG_SIZE;
     285              :         }
     286              : 
     287            8 :         request_id = libspdm_encapsulated_request_response->header.param1;
     288              : 
     289            8 :         encapsulated_request = (void *)(libspdm_encapsulated_request_response + 1);
     290            8 :         encapsulated_request_size =
     291            8 :             spdm_response_size - sizeof(spdm_encapsulated_request_response_t);
     292              : 
     293            8 :         libspdm_copy_mem (spdm_context->last_spdm_request,
     294            8 :                           libspdm_get_scratch_buffer_last_spdm_request_capacity(spdm_context),
     295              :                           encapsulated_request,
     296              :                           encapsulated_request_size);
     297            8 :         spdm_context->last_spdm_request_size = encapsulated_request_size;
     298            8 :         encapsulated_request = (void *)spdm_context->last_spdm_request;
     299              : 
     300            8 :         libspdm_release_receiver_buffer (spdm_context);
     301              :     }
     302              : 
     303              :     while (true) {
     304              :         /* Process request. */
     305            8 :         transport_header_size = spdm_context->local_context.capability.transport_header_size;
     306            8 :         status = libspdm_acquire_sender_buffer (spdm_context, &message_size, (void **)&message);
     307            8 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     308            0 :             return status;
     309              :         }
     310            8 :         LIBSPDM_ASSERT (message_size >= transport_header_size +
     311              :                         spdm_context->local_context.capability.transport_tail_size);
     312            8 :         spdm_request = (void *)(message + transport_header_size);
     313            8 :         spdm_request_size = message_size - transport_header_size -
     314            8 :                             spdm_context->local_context.capability.transport_tail_size;
     315              : 
     316            8 :         spdm_context->crypto_request = true;
     317            8 :         spdm_deliver_encapsulated_response_request = (void *)spdm_request;
     318            8 :         spdm_deliver_encapsulated_response_request->header.spdm_version =
     319            8 :             libspdm_get_connection_version (spdm_context);
     320            8 :         spdm_deliver_encapsulated_response_request->header.request_response_code =
     321              :             SPDM_DELIVER_ENCAPSULATED_RESPONSE;
     322            8 :         spdm_deliver_encapsulated_response_request->header.param1 = request_id;
     323            8 :         spdm_deliver_encapsulated_response_request->header.param2 = 0;
     324            8 :         encapsulated_response = (void *)(spdm_deliver_encapsulated_response_request + 1);
     325            8 :         encapsulated_response_size =
     326            8 :             spdm_request_size - sizeof(spdm_deliver_encapsulated_response_request_t);
     327              : 
     328            8 :         status = libspdm_process_encapsulated_request(
     329              :             spdm_context, encapsulated_request_size,
     330              :             encapsulated_request, &encapsulated_response_size,
     331              :             encapsulated_response);
     332            8 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     333            0 :             libspdm_release_sender_buffer (spdm_context);
     334            0 :             return status;
     335              :         }
     336              : 
     337            8 :         spdm_request_size =
     338            8 :             sizeof(spdm_deliver_encapsulated_response_request_t) + encapsulated_response_size;
     339            8 :         status = libspdm_send_spdm_request(
     340              :             spdm_context, session_id, spdm_request_size,
     341              :             spdm_request);
     342            8 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     343            0 :             libspdm_release_sender_buffer (spdm_context);
     344            0 :             return status;
     345              :         }
     346            8 :         libspdm_release_sender_buffer (spdm_context);
     347            8 :         spdm_deliver_encapsulated_response_request = (void *)spdm_context->last_spdm_request;
     348              : 
     349              :         /* Receive. */
     350            8 :         status = libspdm_acquire_receiver_buffer (spdm_context, &message_size, (void **)&message);
     351            8 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     352            0 :             return status;
     353              :         }
     354            8 :         LIBSPDM_ASSERT (message_size >= transport_header_size);
     355            8 :         spdm_response = (void *)(message);
     356            8 :         spdm_response_size = message_size;
     357              : 
     358            8 :         status = libspdm_receive_spdm_response(
     359              :             spdm_context, session_id, &spdm_response_size,
     360              :             (void **)&spdm_response);
     361            8 :         spdm_encapsulated_response_ack_response = (void *)spdm_response;
     362            8 :         if (LIBSPDM_STATUS_IS_ERROR(status)) {
     363            0 :             libspdm_release_receiver_buffer (spdm_context);
     364            0 :             return status;
     365              :         }
     366            8 :         if (spdm_encapsulated_response_ack_response->header.request_response_code == SPDM_ERROR) {
     367            1 :             libspdm_release_receiver_buffer(spdm_context);
     368              : 
     369            1 :             if (spdm_response_size < sizeof(spdm_error_response_t)) {
     370            0 :                 libspdm_release_receiver_buffer (spdm_context);
     371            0 :                 return LIBSPDM_STATUS_INVALID_MSG_SIZE;
     372              :             }
     373              : 
     374            1 :             status = libspdm_handle_error_response_main(
     375              :                 spdm_context, session_id,
     376              :                 &spdm_response_size, (void **)&spdm_response,
     377              :                 SPDM_DELIVER_ENCAPSULATED_RESPONSE,
     378              :                 SPDM_ENCAPSULATED_RESPONSE_ACK);
     379            1 :             return status;
     380            7 :         } else if (spdm_encapsulated_response_ack_response->header.request_response_code !=
     381              :                    SPDM_ENCAPSULATED_RESPONSE_ACK) {
     382            1 :             libspdm_release_receiver_buffer (spdm_context);
     383            1 :             return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     384              :         }
     385            6 :         if (spdm_encapsulated_response_ack_response->header.spdm_version !=
     386            6 :             spdm_deliver_encapsulated_response_request->header.spdm_version) {
     387            0 :             libspdm_release_receiver_buffer (spdm_context);
     388            0 :             return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     389              :         }
     390            6 :         if (spdm_encapsulated_response_ack_response->header.spdm_version >=
     391              :             SPDM_MESSAGE_VERSION_12) {
     392            1 :             ack_header_size = sizeof(spdm_encapsulated_response_ack_response_t);
     393              :         } else {
     394            5 :             ack_header_size = sizeof(spdm_message_header_t);
     395              :         }
     396            6 :         if (spdm_response_size < ack_header_size) {
     397            0 :             libspdm_release_receiver_buffer (spdm_context);
     398            0 :             return LIBSPDM_STATUS_INVALID_MSG_SIZE;
     399              :         }
     400              : 
     401            6 :         if (spdm_encapsulated_response_ack_response->header.spdm_version >=
     402              :             SPDM_MESSAGE_VERSION_12) {
     403            1 :             if (spdm_encapsulated_response_ack_response->ack_request_id !=
     404            1 :                 spdm_deliver_encapsulated_response_request->header.param1) {
     405            0 :                 libspdm_release_receiver_buffer (spdm_context);
     406            0 :                 return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     407              :             }
     408              :         }
     409              : 
     410            6 :         switch (spdm_encapsulated_response_ack_response->header.param2) {
     411            5 :         case SPDM_ENCAPSULATED_RESPONSE_ACK_RESPONSE_PAYLOAD_TYPE_ABSENT:
     412            5 :             libspdm_release_receiver_buffer (spdm_context);
     413            5 :             return LIBSPDM_STATUS_SUCCESS;
     414            0 :         case SPDM_ENCAPSULATED_RESPONSE_ACK_RESPONSE_PAYLOAD_TYPE_PRESENT:
     415            0 :             break;
     416            1 :         case SPDM_ENCAPSULATED_RESPONSE_ACK_RESPONSE_PAYLOAD_TYPE_REQ_SLOT_NUMBER:
     417            1 :             if (spdm_response_size >= ack_header_size + sizeof(uint8_t)) {
     418            1 :                 if ((req_slot_id_param != NULL) && (*req_slot_id_param == 0)) {
     419            0 :                     *req_slot_id_param =
     420            0 :                         *((uint8_t *)spdm_encapsulated_response_ack_response + ack_header_size);
     421              :                     /* 0xFF or 0xF slot is not allowed. */
     422            0 :                     if (*req_slot_id_param >= SPDM_MAX_SLOT_COUNT) {
     423            0 :                         libspdm_release_receiver_buffer (spdm_context);
     424            0 :                         return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     425              :                     }
     426              : 
     427            0 :                     if ((spdm_encapsulated_response_ack_response->header.spdm_version >=
     428            0 :                          SPDM_MESSAGE_VERSION_13) &&
     429            0 :                         spdm_context->connection_info.multi_key_conn_req) {
     430            0 :                         if ((spdm_context->local_context.local_key_usage_bit_mask[*req_slot_id_param
     431            0 :                              ] & SPDM_KEY_USAGE_BIT_MASK_KEY_EX_USE) == 0) {
     432            0 :                             libspdm_release_receiver_buffer (spdm_context);
     433            0 :                             return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     434              :                         }
     435              :                     }
     436              :                 }
     437            1 :                 libspdm_release_receiver_buffer (spdm_context);
     438            1 :                 return LIBSPDM_STATUS_SUCCESS;
     439              :             } else {
     440            0 :                 libspdm_release_receiver_buffer (spdm_context);
     441            0 :                 return LIBSPDM_STATUS_INVALID_MSG_SIZE;
     442              :             }
     443              :             break;
     444            0 :         default:
     445            0 :             libspdm_release_receiver_buffer (spdm_context);
     446            0 :             return LIBSPDM_STATUS_INVALID_MSG_FIELD;
     447              :         }
     448            0 :         request_id = spdm_encapsulated_response_ack_response->header.param1;
     449              : 
     450            0 :         encapsulated_request =
     451              :             ((uint8_t *)spdm_encapsulated_response_ack_response + ack_header_size);
     452            0 :         encapsulated_request_size = spdm_response_size - ack_header_size;
     453              : 
     454            0 :         libspdm_copy_mem (spdm_context->last_spdm_request,
     455            0 :                           libspdm_get_scratch_buffer_last_spdm_request_capacity(spdm_context),
     456              :                           encapsulated_request,
     457              :                           encapsulated_request_size);
     458            0 :         spdm_context->last_spdm_request_size = encapsulated_request_size;
     459            0 :         encapsulated_request = (void *)spdm_context->last_spdm_request;
     460              : 
     461            0 :         libspdm_release_receiver_buffer (spdm_context);
     462              :     }
     463              : 
     464              :     return LIBSPDM_STATUS_SUCCESS;
     465              : }
     466              : 
     467            0 : libspdm_return_t libspdm_send_receive_encap_request(void *spdm_context, const uint32_t *session_id)
     468              : {
     469            0 :     return libspdm_encapsulated_request(spdm_context, session_id, 0, NULL);
     470              : }
     471              : 
     472              : #endif /* LIBSPDM_ENABLE_CAPABILITY_ENCAP_CAP */
        

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